private static StrongBidiCategory GetBidiCategoryNoBoundsChecks(uint codePoint)
{
nuint offset = GetCategoryCasingTableOffsetNoBoundsChecks(codePoint);
// Each entry of the 'CategoryValues' table uses bits 5 - 6 to store the strong bidi information.
StrongBidiCategory bidiCategory = (StrongBidiCategory)(Unsafe.AddByteOffset(ref MemoryMarshal.GetReference(CategoriesValues), offset) & 0b_0110_0000);
Debug.Assert(bidiCategory == StrongBidiCategory.Other || bidiCategory == StrongBidiCategory.StrongLeftToRight || bidiCategory == StrongBidiCategory.StrongRightToLeft, "Unknown StrongBidiCategory value.");
return(bidiCategory);
}
private static void Parse(List <CharUnicodeInfoTestCase> testCases, string line)
{
// Data is in the format:
// code-value;
// character-name;
// general-category;
// canonical-combining-classes; (ignored)
// bidirecional-category; (ignored)
// character-decomposition-mapping; (ignored)
// decimal-digit-value; (ignored)
// digit-value; (ignoed)
// number-value;
string[] data = line.Split(';');
string charValueString = data[0];
string charName = data[1];
string charCategoryString = data[2];
string numericValueString = data[8];
StrongBidiCategory bidiCategory = data[4] == "L" ? StrongBidiCategory.StrongLeftToRight :
data[4] == "R" || data[4] == "AL" ? StrongBidiCategory.StrongRightToLeft : StrongBidiCategory.Other;
int codePoint = int.Parse(charValueString, NumberStyles.HexNumber);
Parse(testCases, codePoint, charCategoryString, numericValueString, bidiCategory);
if (charName.EndsWith("First>"))
{
s_rangeMinCodePoint = codePoint;
}
else if (charName.EndsWith("Last>"))
{
// Assumes that we have already found a range start
for (int rangeCodePoint = s_rangeMinCodePoint + 1; rangeCodePoint < codePoint; rangeCodePoint++)
{
// Assumes that all code points in the range have the same numeric value
// and general category
Parse(testCases, rangeCodePoint, charCategoryString, numericValueString, bidiCategory);
}
}
}
private static void Parse(List <CharUnicodeInfoTestCase> testCases, int codePoint, string charCategoryString, string numericValueString, StrongBidiCategory bidiCategory)
{
string codeValueRepresentation = codePoint > char.MaxValue ? char.ConvertFromUtf32(codePoint) : ((char)codePoint).ToString();
double numericValue = ParseNumericValueString(numericValueString);
UnicodeCategory generalCategory = s_unicodeCategories[charCategoryString];
testCases.Add(new CharUnicodeInfoTestCase()
{
Utf32CodeValue = codeValueRepresentation,
GeneralCategory = generalCategory,
NumericValue = numericValue,
CodePoint = codePoint,
BidiCategory = bidiCategory
});
}
